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Safety management of Railway system Natural hazards

Safety management of Railway system Natural hazards Aude MIALI, SNCF Réseau - Direction Maintenance Travaux Jean Marc TERPEREAU, SNCF Réseau - Direction Ingénierie et Projet. Presentation /Context. Our network : 30 000 km of railway lines, 100 000 watched earthworks

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Safety management of Railway system Natural hazards

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  1. Safety management of Railway system Natural hazards Aude MIALI, SNCF Réseau - Direction Maintenance Travaux Jean Marc TERPEREAU, SNCF Réseau - Direction Ingénierie et Projet

  2. Presentation /Context • Our network : 30 000 km of railway lines, 100 000 watched earthworks • Old and heterogeneous assets in a changing environment (urbanisation, climate change,…) • A field with inherent uncertainties (no mathematical modelling for the ageing process,…) – expertise is essential • A level of requirement to achieve on the network (art 31 – Arrêté du 19 mars 2012) «  prévenir les risques de déraillement… de heurt de tout obstacle dont la survenanceestraisonnablementprévisible» • How to conciliate natural hazard management with safety command on the railway system? Safety management of Railway system – Natural hazards | Aude MIALI & Jean-Marc TERPEREAU, SNCF Réseau

  3. Safety driven bow tie Safety management of Railway system – Natural hazards | Aude MIALI & Jean-Marc TERPEREAU, SNCF Réseau

  4. Domain event / Barrier / Global event Safety management of Railway system – Natural hazards | Aude MIALI & Jean-Marc TERPEREAU, SNCF Réseau

  5. Line performance target and barriers type • Consistent safety level on the network in accordance with the law • RAM,€ level set by the authorities Safety management of Railway system – Natural hazards | Aude MIALI & Jean-Marc TERPEREAU, SNCF Réseau

  6. Site expertise • Our asset : 100 000 watched earthworks, expertise on 10 000 earthworks • Huge variety : different ECR with various impacts, wide distribution of their occurrence in space and time. • Would a domain event lead to an unwanted system event ? • Expertise Safety management of Railway system – Natural hazards | Aude MIALI & Jean-Marc TERPEREAU, SNCF Réseau

  7. Site Expertise • Technical solutions to reach the safety level target on each site Safety management of Railway system – Natural hazards | Aude MIALI & Jean-Marc TERPEREAU, SNCF Réseau

  8. Site Expertise • Selection of solutions per site and RAMS,€ level Solutions satisfyingSafetyrequirement Solutions in line with Site RAMS€ target Available technical solutions Safety RAM€ Innovations Safety management of Railway system – Natural hazards | Aude MIALI & Jean-Marc TERPEREAU, SNCF Réseau

  9. Optimising line performance • RAMS,€ impact on line ? Safety management of Railway system – Natural hazards | Aude MIALI & Jean-Marc TERPEREAU, SNCF Réseau

  10. Asset Manager and Regulatory Authority • 5M€ and a trip 10 minutes longer, added to limited investments on station parking as a compensation for the loss of time • A pertinent and unexpected solution, thanks to methodological support and fruitful exchanges Point n°1 : Solution tout confortement Point n°2 : Solution aucun confortement Points n°3 et 4 : Optimums théoriques trouvés lors de l’analyse L’enveloppe théorique des solutions représente l’ensemble de solutions possibles (tirage aléatoire). • 21M€ and no delay on 30 km ? • 0M€ and 16 minutes delay ? Safety management of Railway system – Natural hazards | Aude MIALI & Jean-Marc TERPEREAU, SNCF Réseau

  11. Conclusions This methodology presents several advantages: Linear process Safety first RAM€ Optimization • Allows the continuous process to focus on safety • first and then to optimize RAM€ issues in link with other domains Safety management of Railway system – Natural hazards | Aude MIALI & Jean-Marc TERPEREAU, SNCF Réseau

  12. Conclusions This methodology presents several advantages: Multi domain process • Helps to identify barrier combination Safety management of Railway system – Natural hazards | Aude MIALI & Jean-Marc TERPEREAU, SNCF Réseau

  13. Conclusions This methodology presents several advantages: • Makes the exchanges easier and improves mutual comprehension between the • different domains, the system integrator and Regulatory Authority in order to reach a RAMS,€ optimum Mutual comprehension Shared targets Safety management of Railway system – Natural hazards | Aude MIALI & Jean-Marc TERPEREAU, SNCF Réseau

  14. Conclusions This methodology presents several advantages: Generic method Regularity aspects • Could be transposed in high • density areas to manage unwanted regularity events Safety management of Railway system – Natural hazards | Aude MIALI & Jean-Marc TERPEREAU, SNCF Réseau

  15. Thank you ! Aude MIALI, SNCF Réseau - Direction Maintenance Travaux Jean Marc TERPEREAU, SNCF Réseau - Direction Ingénierie et Projet

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